Crystals

We use only good quality, commercial grade crystals of 5 ppm tolerance from the best crystal labs. Normal delivery time is about 2-3 weeks because the best crystals are aged to provide good stability over a period of time.

Beware of amateur grade crystals advertised in ham magazines. Many do not have good enough calibration tolerance or stability. Insist on only commercial grade crystals for any 2-way radio equipment.

Frequency stability for crystal controlled transmitters and receivers consists of a commercial-grade crystal with a rating of ±5 ppm over a temperature range of +10°C to +60°C (50°F to 140°F). Note that crystal ovens, for wider temperature range, are no longer available.

Synthesized Radios

Our synthesized radios do not require channel crystals or crystal ovens. Synthesized radios come standard with temperature compensated crystal oscillators (TCXO), which provide ±2 ppm stability over a temperature range of +10°C to +60°C (50°F to 140°F) without requiring a crystal oven. That is a major advantage of synthesized modules vs. crystal controlled. Replacement micros for synthesized units are available for $20.00